-- @testpoint: opengauss关键字Hierarchy(非保留)，作为函数名，部分测试点合理报错

--关键字不带引号-成功
drop function if exists Hierarchy;
create function Hierarchy(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists Hierarchy;

--关键字带双引号-成功
drop function if exists "Hierarchy";
create function "Hierarchy"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function if exists "Hierarchy";

--关键字带单引号-合理报错
drop function if exists 'Hierarchy';
create function 'Hierarchy'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `Hierarchy`;
create function `Hierarchy`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/